<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />
<!-- 可修改文案和加载图标的颜色 -->
<van-loading class="load-action" color="#0094ff" vertical v-if="artObj.title === undefined">文章疯狂加载ing...</van-loading>
    <div v-else>
      <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{ artObj.title }}</h1>

      <!-- 用户信息 -->
      <van-cell
        center
        :title="artObj.aut_name"
        :label="formatDate(artObj.pubdate)"
      >
        <template #icon>
          <img :src="artObj.aut_photo" alt="" class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button
              type="info"
              size="mini"
              v-if="artObj.is_followed === true"
              @click="unFollowedFn"
              >已关注</van-button
            >
            <van-button
              icon="plus"
              type="info"
              size="mini"
              plain
              v-else
              @click="followedFn"
              >关注</van-button
            >
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="artObj.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <div class="like-box">
        <van-button
          icon="good-job"
          type="danger"
          size="small"
          v-if="artObj.attitude === 1"
          @click="unThumbsUp"
          >已点赞</van-button
        >
        <van-button
          icon="good-job-o"
          type="danger"
          plain
          size="small"
          v-else
          @click="thumbsUp"
          >点赞</van-button
        >
      </div>
    </div>
    <!-- 文章评论区 -->
    <comment-list :artId="$route.query.aid"></comment-list>
    </div>
  </div>
</template>

<script>
import {
  getArticleDetailAPI,
  followedAuthorAPI,
  unFollowedAuthorAPI,
  likeAuthorAPI,
  unLikeAuthorAPI
} from '@/api'
import dayjs from 'dayjs'
import 'dayjs/locale/zh-cn' // import locale
import * as relativeTime from 'dayjs/plugin/relativeTime' // use locale
import CommentList from './CommentList.vue'
dayjs.extend(relativeTime)
dayjs.locale('zh-cn')
export default {
  name: 'Article',
  data () {
    return {
      artObj: {}
    }
  },
  components: {
    CommentList
  },
  async created () {
    const res = await getArticleDetailAPI({ artId: this.$route.query.aid })
    this.artObj = res.data.data
  },
  methods: {
    formatDate (dateStr) {
      var a = dayjs()
      var b = dayjs(dateStr)
      const c = a.to(b) // 2 years ago
      return c
    },
    // 关注按钮点击事件
    async followedFn () {
      await followedAuthorAPI(this.artObj.aut_id)
      this.artObj.is_followed = true
    },
    // 取消关注点击事件
    async unFollowedFn () {
      await unFollowedAuthorAPI(this.artObj.aut_id)
      this.artObj.is_followed = false
    },
    // 点赞
    async thumbsUp () {
      await likeAuthorAPI(this.$route.query.aid)
      this.artObj.attitude = 1
    },
    // 取消点赞
    async unThumbsUp () {
      await unLikeAuthorAPI(this.$route.query.aid)
      this.artObj.attitude = -1
    }
  }
}
</script>

<style scoped lang="less">
// loading加载图标样式
.load-action{
  margin-top: 46px;
}
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
</style>
